priority diverter valve

A diverter valve, spool technology, used in multi-port valves, valve devices, fluid steering mechanisms, etc.
CN1094181CInactive Publication Date: 2002-11-13SHIMADZU SEISAKUSHO CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHIMADZU SEISAKUSHO CO LTD
Publication Date
2002-11-13
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A priority type diverter valve is to make the aperture of the small hole (61) of the damping hole (6) unchanged, cut a cutout (62) on the valve column (2), pass through the cutout (62), and divide into two stages A device that switches the damping effect. For this reason, during steering operation, the joint (62) is not opened to improve the damping effect, while the spool (2) acts on the spool (2) to act on the sufficient holding force required to suppress the oscillation, the joint (62) is opened when moving to reduce the damping effect, The drag resistance of the spool (2) is reduced, and a quick response characteristic can be obtained. The valve can take into account the stability of the steering operation and the fast switching characteristics between the operating states.
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Description

technical field

[0001] The present invention relates to a priority type diverter valve suitable for steering and loading and unloading control by using pressurized liquid from a common hydraulic source like forklifts. Background technique

[0002] For example, forklifts, etc., use the diverter valve to divert the pressurized liquid provided by a single hydraulic source, giving priority to ensuring a certain flow is used for steering, and the remaining flow is supplied to loading and unloading operations. In this way, a diverter valve that preferentially secures a certain flow rate for a specific purpose such as steering is called a priority diverter valve.

[0003] However, the existing priority diverter valve has a body with a high-pressure port, a port for steering, and a port for loading and unloading; it can slide in the body, and guide the pressurized liquid in the high-pressure port to the port for steering through the control hole, and directly Guide to the spool of ...

Claims

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